Ambari API samples

get_host_distribution.sh

#!/bin/bash

: ${AMBARI_API:=http://localhost:8080}

curl --silent --request GET \
  --url "${AMBARI_API}/api/v1/clusters/little_data/hosts?fields=Hosts/rack_info' \
  --header 'X-Requested-By: ambari' \
  --header 'Accept: application/json, text/javascript, */*; q=0.01' \
  --header 'cache-control: no-cache' | jq '.items[].Hosts.rack_info' | sort | uniq -c
 
### Sample output 
#   7 "/rack1"
#   4 "/rack2"
#   5 "/rack3"
#   7 "/vmware"